CAJ | 학술논문

间接空冷、脱硫与排烟功能一体的“三塔合一”技术，兼具节水、节能和环保优势，近年来在我国火力发电中得到快速发展。“三塔合一”条件下，空冷塔内空气流场的热力性能，对揭示空冷塔散热、烟气扩散及空冷塔内壁腐蚀等关键问题具有重要意义。建立了间接空冷塔内布置烟囱和脱硫塔的数学模型，通过数值模拟方法分析了环境风和烟囱高度对塔内空气流场及散热器热力性能的影响，并获得了定量的分析结果。研究表明：环境风对空冷系统塔内空气流场和温度场有较大影响，进而影响空冷散热器的散热性能，不利于烟气扩散，同时会加重空冷塔壁腐蚀；而烟囱高度对空冷塔换热性能的影响较小。
간접공랭、탈류여배연공능일체적“삼탑합일”기술，겸구절수、절능화배보우세，근년래재아국화력발전중득도쾌속발전。“삼탑합일”조건하，공랭탑내공기류장적열력성능，대게시공랭탑산열、연기확산급공랭탑내벽부식등관건문제구유중요의의。건립료간접공랭탑내포치연창화탈류탑적수학모형，통과수치모의방법분석료배경풍화연창고도대탑내공기류장급산열기열력성능적영향，병획득료정량적분석결과。연구표명：배경풍대공랭계통탑내공기류장화온도장유교대영향，진이영향공랭산열기적산열성능，불리우연기확산，동시회가중공랭탑벽부식；이연창고도대공랭탑환열성능적영향교소。
Incorporation of indirect dry cooling tower, desulfidation tower and exhaust flue gas chimney in power plant has both the functions of energy saving, water saving and environmental protection, which has been developed rapidly recently. Air flow performance inside indirect dry cooling tower while considering the flow fields of exhaust flue gas has significant influences on heat dissipation capacity of dry cooling tower, flue gas exhaust, as well as the corrosion of tower wall. In order to obtain the effects of environmental natural wind and height of flue gas chimney on the airflow field and heat dissipation of three incorporate towers system, mathematical model as well as numerical simulation was established. Based on which, the quantitative results were acquired. The results indicate that, the environmental natural wind affects airflow velocity and temperature fields inside dry cooling tower obviously, hence, affects the heat dissipation of heat exchangers and the flue gas exhaust,. The corrosion of tower wall also can be enhanced by the airflow fields. As comparison, the height of flue gas chimney has little effects on the thermal performance of dry cooling tower.